services: ntpd: Add 'allow-large-adjustment?' knob.

Suggested by Leo Famulari.

* gnu/services/networking.scm (<ntp-configuration>)[allow-large-adjustment?]:
New field.
(ntp-shepherd-service): Honor it.
(ntp-service): Add #:allow-large-adjustment? and honor it.
* doc/guix.texi (Networking Services): Document it.

gnu: services sddm  Fix typo.

* gnu/services/sddm.scm: sddm-confiugration? --> sddm-configuration?

gnu: Add NFS related services.

* gnu/services/nfs.scm (pipefs-service-type): New variable,
(gss-service-type): New variable, (idmap-service-type) New variable.

* doc/guix.texi (Network File System): New node.

services: xorg: Add ATI video driver to the default modules.

* gnu/services/xorg.scm (%default-xorg-modules): Add xf86-video-ati.

Signed-off-by: 宋文武 <iyzsong@gmail.com>

services: rottlog: Add Rottlog to the global profile.

* gnu/services/admin.scm (rottlog-service-type): Extend
PROFILE-SERVICE-TYPE.

services: rottlog: Improve default weekly rotations.

* gnu/services/admin.scm (%rotated-files): Add "/var/log/maillog".
(syslog-rotation-config): Change parameter to 'files'.  Return a
string-append gexp for all of FILES.
(simple-rotation-config): Remove unnecessary 'postrotate' and
'endscript'.
(%default-rotations): Adjust accordingly.

services: openssh-service-type: Expose 'openssh-configuration'.

* gnu/services/ssh.scm (<openssh-configuration>): Add default values.
[pubkey-authentication?]: Rename to...
[public-key-authentication?]: ... this.
(openssh-service): Remove.
* doc/guix.texi (Networking Services): Adjust accordingly.

services: Add rottlog.

* gnu/services/admin.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.
* doc/guix.texi (Log Rotation): New node.

Co-authored-by: Ludovic Courtès <ludo@gnu.org>

gnu: rpcbind-configuration: Rename pkg to nfs-utils

* gnu/services/nfs.scm (<rpcbind-configuration>): "pkg" --> "nfs-utils"

services: Add 'openssh-service'.

* gnu/packages/ssh.scm (openssh)[arguments]: Set sysconfdir to /etc/ssh.
* gnu/services/ssh.scm (<openssh-configuration>): New record type.
(%openssh-accounts): New variable.
(openssh-activation, openssh-config-file, openssh-shepherd-service)
(openssh-service): New procedures.
(openssh-service-type): New variable.
* doc/guix.texi (Networking Services): Document 'openssh-services'.

Co-authored-by: Ludovic Courtès <ludo@gnu.org>

gnu: New default Dovecot service postmaster_address

* gnu/services/mail.scm (dovecot-configuration): Change default for
  postmaster-address, as dovecot is now requiring a non-empty value and
  will fail to start up otherwise.
* doc/guix.texi (Mail Services): Update.

services: console-font: A single service handles all the VTs.

* gnu/services/base.scm (%default-console-font): New variable.
(console-font-shepherd-services): New procedure.
(console-font-service-type): Change to use 'service-type'.
(console-font-service): Rewrite using 'simple-service'.
(%base-services): Use a single CONSOLE-FONT-SERVICE-TYPE instance.
* gnu/system/install.scm (installation-services): Likewise.

doc: "filesystem" -> "file system"

* doc/guix.texi: "filesystem" -> "file system"
* gnu/packages/admin.scm: "filesystem" -> "file system"
* gnu/packages/cdrom.scm: "filesystem" -> "file system"
* gnu/packages/compression.scm: "filesystem" -> "file system"
* gnu/packages/disk.scm: "filesystem" -> "file system"
* gnu/packages/gnome.scm: "filesystem" -> "file system"
* gnu/packages/irc.scm: "filesystem" -> "file system"
* gnu/packages/linux.scm: "filesystem" -> "file system"
* gnu/packages/mail.scm: "filesystem" -> "file system"
* gnu/packages/mpd.scm: "filesystem" -> "file system"
* gnu/packages/ocaml.scm: "filesystem" -> "file system"
* gnu/packages/perl.scm: "filesystem" -> "file system"
* gnu/packages/python.scm: "filesystem" -> "file system"
* gnu/packages/search.scm: "filesystem" -> "file system"
* gnu/packages/tls.scm: "filesystem" -> "file system"
* gnu/services/mail.scm: "filesystem" -> "file system"

services: nginx: Actually check if configuration is valid.

* gnu/services/web.scm (nginx-activation): Fix path to nginx binary.

services: Add kmscon service.

* gnu/services/base.scm (<kmscon-configuration>, kmscon-service-type):
  New variables.
* doc/guix.texi (@deffn kmscon-service-type, @deftp
  kmscon-configuration): Add documentation.

services: Add login-service.

* gnu/services/base.scm (%default-motd, <login-configuration>,
  login-pam-service, login-serivce-type, login-service): New variables.
  (<mingetty-configuration>, mingetty-shepherd-service,
  mingetty-serivce-type): Remove motd. Remove allow-empty-passwords?.
  Remove mingetty-pam-service.
  (%base-services): Add login-service. Remove motd.

system: Use 'file-append' to denote file names.

* gnu/services/avahi.scm, gnu/services/base.scm,
gnu/services/databases.scm, gnu/services/dbus.scm,
gnu/services/desktop.scm, gnu/services/dict.scm,
gnu/services/mail.scm, gnu/services/networking.scm,
gnu/services/sddm.scm, gnu/services/spice.scm,
gnu/services/ssh.scm, gnu/services/web.scm,
gnu/services/xorg.scm, gnu/system.scm: Replace the
 #~(string-append #$pkg "/bin/foo") idiom with
 (file-append pkg "/bin/foo").

services: ntpd: Use a dedicated directory for drift file.

Fixes <https://bugs.gnu.org/24366>.  Drift file now resides in a
dedicated directory owned by the daemon.

* gnu/services/networking.scm (ntp-service-activation): New procedure,
(ntp-service-type): Add new service-extension.

gnu: Add rpc-daemon service

* gnu/services/nfs.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.

services: syslog: Use a PID file.

* gnu/services/base.scm (syslog-service-type)[start]: Remove --no-detach
and use #:pid-file.